Improvement in paper-cutting machines



BENJAMIN WEAVER. Paper Cutting Machine.

Patented March 5, I872.

Witnesses:

BENJAMIN WEAVER, OF SPRINGFIELD, MASSACHUSETTS, A SSIGNOR TO GEORGE H. SANBORN.

IMPROVEMENT IN PAPER-CUTTING MACHINES.

Specification forming part of Letters Patent N 0. 124,236, dated March 5, 1872.

To all whom it may concern:

Be it known that I, BENJAMIN WEAVER, (assignor to George H. Sanborn,) of Springfield, Hampden county, Massachusetts, have invented, made, and applied to use a new and Improved Front Gauge for Paper Gutting Machines; and that the following is a full, clear, and correct description of the same, reference being had to the accompanying drawing mak in g part of this specification and to the letters of reference marked thereon, in which- Figure l is a front elevation of a paper-cutting machine to which my front gauge has been applied, the knife being shown up. Fig. 2 is a front elevation of the same, the gauge having been moved sidewise to allow the cut paper to be removed from the machine.

In the drawing, like parts of the invention are designated by the same letters of reference.

The nature of my invention consists in the construction, as more fully hereinafter set forth, of an improved front gauge for paper-cuttin g machines; the object of the invention being the production of a front gauge for paper-cutting machines which shall facilitate the cutting of the paper by the machine with accuracy.

To enable those skilled in the arts to make and use my invention, I will describe the construction and operation of the same.

A shows the frame of a paper-cutting machine, provided with a table, B, and cross-head (J. The sides of the upright portions of the frame are slotted to receive the boxes D, in which are secured the upper ends of the links E, the lower ends of which are attached to a knife-bar, F, in which the knife G is secured. The table 0 is slotted, to allow of the attachment to the machine of the ordinary back gauge. The front gauge, attached to the portion of the table 0 in front of the knife G, consists of the plate H, having attached to it the slotted end pieces or plates I, through the slots of which screws are inserted and hold it to the table 0, this plate H being adjustable to the extent of the vertical slots in the end pieces or plates I. The upper portion of one of the end pieces or plates I is cut away a certain distance, for the purpose hereinafter set forth. The plate H is provided with a headed standard, J, around which is coiled a portion of the wire spring K. The gauge proper is composed of the strip or plate L, supporting the upright strip M, trued upon its face, or that portion of it directly in front of the paper to be cut, and having an end piece, N, projecting beyond the strip L and falling into the cut-away portion of the plate H. Two links, 0, having their ends attached to the strips or plates H and I, connect these plates together. These links are placed obliquely, so that a lateral movement may be given to the upper plate L. Upon the face of the plate L is secured a screw or stop, a, for the forward end of the wire K to bear against. P shows a handle, attached about centrally to the plate H, the forward end of which is slotted, and in whichslotted portion a stop, secured upon the plate L, moves or plays.

Such being the construction, the operation is as follows: The knife being elevated, as shown in Fig. l of the drawing, the paper or other material to be cut is placed beneath the knife, and is clamped as is usual. Prior to the paper being clamped, the front gauge is adjusted to accommodate the width of paper which it is desired to cut. The adjustment is effected by advancingor withdrawing the plate H through the slotted end pieces or p'lates I. Thus, if the width of paper to be cut is half an inch, the plate H is withdrawn until there will be a space of half an inch between the knife G and the face of the upright strip M. The paper having been clamped, the knife G is depressed, passing through the paper, cutting the samc. The knife being beveled, as shown, has a tendency, as it passes through the paper, to throw the same forward; and, as the mass of paper is advanced, it is pressed against the front strip M, which is supported upon the plate L and yields to the pressure. After the knife has passed through the paper, the operator seizes the handle P and moves the same laterally in one direction, by which a lateral movement in the opposite direction, through the links placed obliquely, is given to the plate L, upon which is secured the front strip M; and when the plate L has reached the extent of its lateral movement, the cut paper may be removed from the table B of the machine. Afterthe paper has been removed from the table of the machine, the operator releases his hold upon the handle P, and the coiled wire K, acting as a spring, causes the plate L to return links 0, spring K, and handle P, constructed to its former position, the end piece N being and operating substantially as and for the purreceived and stopped by the cut-away portion poses set forth.

of the side piece I. BENJAMIN WEAVER.

Having now set forth my invention, what I claim as new is- In presence of-- The combination of the plate H, constructed V. S. GREENE,

as described, with the plate L, face-plate M, A. S. DOANE. 

